Regular Expressions 101

^start of line

\s*any whitespace character, repeated any number of times

Non-Capturing Group(?:\+?(\d{1,3}))?

?repeats the group contents below at most once:

\+?optionally matches the literal + (43₁₀ / 53₈ / 2B₁₆)

Group 1(\d{1,3})

\d{1,3}a digit, repeated between 1 and 3 times

Character Class[-. (]*

*matches any number of characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 2(\d{3})

\d{3}a digit, repeated exactly 3 times

Character Class[-. )]*

*matches any number of characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Group 3(\d{3})

\d{3}a digit, repeated exactly 3 times

Character Class[-. ]*

*matches any number of characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 4(\d{4})

\d{4}a digit, repeated exactly 4 times

Non-Capturing Group(?: ?x(\d+))?

?repeats the group contents below at most once:

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Group 5(\d+)

\d+a digit, repeated at least once

\s*any whitespace character, repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^\s*(?:\+?(\d{1,3}))?[-. (]*(\d{3})[-. )]*(\d{3})[-. ]*(\d{4})(?: ?x(\d+))?\s*$

New

18005551234
1 800 555 1234
+1 800 555-1234
+86 800 555 1234
1-800-555-1234
1 (800) 555-1234
(800)555-1234
(800) 555-1234
(800)5551234
800-555-1234
800.555.1234
800 555 1234x5678
8005551234 x5678
1 800 555-1234
1----800----555-1234

Regular Expression

Extraction